/Engine/Source/Runtime/Engine/Classes/EdGraph/EdGraphSchema.h
Adds an action entry containing a single action
virtual void AddAction ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FEdGraphSchemaAction](API\Runtime\Engine\EdGraph\FEdGraphSchemaAction) > & NewAction, [FString](API\Runtime\Core\Containers\FString) const & Category )